Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
thieu xanh » chieu xanh, hieu manh, thien anh
quan trong » gian trong
hoc thieu » toc thieu, hoc hien
hanh tang » anh tang, hanh mang, hanh tung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong san toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong san toan cau*.